Intelligent temperature-adjusting non-woven fabric, intelligent temperature-adjusting coating and intelligent temperature-adjusting disposable hygienic product
Technical Field
The invention relates to an intelligent temperature-adjusting disposable sanitary article (sanitary napkin, paper diaper)
Background
Conventional intelligent thermoregulation fiber is commonly used for adding phase-change materials in the fiber, when the external temperature is higher, the phase-change core material is converted from a solid state into a liquid state, the external heat is absorbed, a user can not feel sultry, when the external temperature is lower, the phase-change core material is converted from the liquid state into the solid state, the heat is released, therefore, the surrounding heat is increased, the user can not feel cold, and further, the surrounding temperature is kept in a relatively balanced range, so that the expected thermoregulation effect of the sanitary towel is achieved. At a specific temperature, phase transition occurs, and heat absorption/release, and thus temperature reduction/rise, occurs. However, the heat absorbed/released by the phase-change material depends on the enthalpy change and the addition amount of the phase-change material, and long-acting temperature regulation cannot be realized.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide a novel intelligent temperature-regulating disposable sanitary product (a sanitary towel and a paper diaper).
In order to achieve the purpose, the intelligent temperature-regulating non-woven fabric is characterized in that an intelligent temperature-regulating coating is sprayed on the surface of the non-woven fabric.
Preferably, the intelligent temperature-regulating coating is prepared by the following method:
1) preparation of modified Infrared radiation powder
2) Dispersing the modified infrared radiation powder into isopropanol to obtain a mixed solution;
3) adding an organic silicon flexible long-chain polymer raw material into the mixed solution to obtain an infrared radiation powder compound precursor;
4) spraying the composite precursor onto non-woven fabric;
5) and carrying out polymerization reaction on the non-woven fabric sprayed with the precursor to obtain the organosilicon flexible long-chain polymer/infrared radiation powder compound.
Preferably, the organosilicon flexible long-chain polymer is a ternary polymerization block organosilicon polymer, which comprises a hydrophobic organosilicon chain segment, a hydrophilic polyether chain segment and a polyether amine chain segment, and the raw materials of the organosilicon flexible long-chain polymer are amino-terminated polyether and epoxy-terminated polyether silicone oil.
Preferably, the spraying is online spraying in an ultrasonic spraying mode.
Preferably, the polymerization reaction is an infrared radiation polymerization reaction, and in-situ polymerization is carried out on active sites on the surface of the infrared radiation powder, so that the short-range mutual synergistic effect of the organosilicon flexible long-chain high polymer material and the infrared radiation powder is ensured.
Preferably, the method also comprises removing the isopropanol by adopting a reduced-pressure heating drying mode.
In order to achieve the purpose, the intelligent temperature-regulating coating comprises the following raw materials in parts by weight: 5-10 parts of modified infrared radiation powder, 20-30 parts of isopropanol, 5-10 parts of amino polyether and 20-30 parts of epoxy terminated polyether silicone oil;
the manufacturing method comprises the following steps:
1) dispersing 5-10 parts of modified infrared radiation powder into 20-30 parts of isopropanol to obtain a mixed solution;
2) and adding 5-10 parts of amino polyether and 20-30 parts of epoxy-terminated polyether silicone oil into the mixed solution to obtain the intelligent temperature-regulating coating.
Preferably, the modified infrared radiation powder comprises the following raw materials in parts by weight: 5-10 parts of infrared radiation powder and 5-10 parts of polyethylene glycol type nonionic surfactant.
The manufacturing method comprises the following steps:
1) grinding infrared radiation powder into powder, and controlling the particle size of the powder to be 20-100 nm;
2) mixing the infrared radiation powder fine powder and polyethylene glycol type nonionic surfactant by high-energy planetary ball milling to obtain a mixture;
3) the mixture is subjected to surface treatment by high-energy corona discharge or plasma radiation to improve the surface activity of the infrared radiation powder fine powder completely covered by the polyethylene glycol type nonionic surfactant.
Preferably, the infrared radiation powder is one or more of tourmaline, alpha-cordierite and transition metal oxide.
In order to achieve the purpose, the intelligent temperature-regulating disposable sanitary article (sanitary towel and paper diaper) adopts the intelligent temperature-regulating non-woven fabric as the surface layer of the disposable sanitary article.
According to the invention, the organic silicon flexible long-chain polymer is adopted to regulate and control the infrared radiance of the heat of the infrared radiation powder, the higher the temperature is, the more free the polymer chain segment rotates, the more the conformation number is, the better the polymer chain flexibility is, the more the molecules are curled, namely, an open door is formed between fibers, the infrared radiation powder and the molecules are in synergistic action, the infrared radiance is high, the heat is rapidly dissipated, and the cooling effect is achieved. On the contrary, the lower the temperature, the more the polymer chain is stretched, which is equivalent to forming a closed door between the fibers, the infrared radiation rate is low, the heat can not be dissipated, and the heat preservation effect is realized. Since the tempering mechanism is based on the curling or stretching of the chain, long-term tempering can be achieved.
Detailed Description
Example 1
The intelligent temperature-regulating coating comprises the following raw materials in parts by weight: 5 parts of tourmaline powder, 10 parts of polyethylene glycol type nonionic surfactant, 10 parts of isopropanol, 20 parts of amino polyether and 20 parts of epoxy-terminated polyether silicone oil
The manufacturing method comprises the following steps:
1) grinding tourmaline powder into 50nm powder, and mixing with polyethylene glycol type nonionic surfactant to obtain modified infrared radiation powder;
2) dispersing the modified infrared radiation powder into isopropanol to obtain a mixed solution;
3) and adding the amino polyether and the epoxy-terminated polyether silicone oil into the mixed solution to obtain the intelligent temperature-regulating coating.
Example 2
The intelligent temperature-regulating coating comprises the following raw materials in parts by weight: 5 parts of alpha-cordierite, 8 parts of polyethylene glycol type nonionic surfactant, 10 parts of isopropanol, 20 parts of amino-terminated polyether and 20 parts of epoxy-terminated polyether silicone oil
The manufacturing method comprises the following steps:
1) grinding the alpha-cordierite powder into powder of 80nm, and mixing the powder with a polyethylene glycol type surfactant to obtain modified infrared radiation powder;
2) dispersing the modified infrared radiation powder into isopropanol to obtain a mixed solution;
3) adding amino polyether and epoxy-terminated polyether silicone oil into the mixed solution to obtain the intelligent temperature-regulating coating.
Example 3
The intelligent temperature-regulating coating comprises the following raw materials in parts by weight: 10 parts of transition metal oxide, 10 parts of polyethylene glycol type nonionic surfactant, 10 parts of isopropanol, 20 parts of amine-terminated polyether and 20 parts of epoxy-terminated polyether silicone oil
The manufacturing method comprises the following steps:
1) infrared radiation powder (Fe) of transition metal oxide system2O3-MnO2-CuO) is ground into powder of 80nm, and is mixed with a polyethylene glycol type nonionic surfactant through high-energy planetary ball milling, and the surface activity is improved by plasma radiation treatment to obtain modified infrared radiation powder;
2) dispersing the modified infrared radiation powder into isopropanol to obtain a mixed solution;
3) adding amino polyether and epoxy-terminated polyether silicone oil into the mixed solution to obtain the intelligent temperature-regulating coating.
Example 3
The intelligent temperature-regulating non-woven fabric of the embodiment is prepared by spraying the coating manufactured in the embodiment 1 or the embodiment 2 on the surface of the non-woven fabric.
Example 4
The intelligent temperature-adjusting non-woven fabric of the embodiment is sprayed on line by an ultrasonic spraying mode by using the coating manufactured in the embodiment 1 or the embodiment 2.
Following the temperature control test of nonwoven fabrics according to different treatment methods
The intelligent temperature-regulating non-woven fabric performance test method comprises the following steps:
1. an insulated box provided with insulating panels was divided into left and right portions, in which the volume on the right side was much larger than that on the left side, and the left and right portions were separated by a test sample nonwoven fabric.
2. The temperature of the left part and the right part is balanced to be consistent at the beginning, different initial temperatures are set, a pulse heat is given to the left side when an experiment is started, and the temperature change after a certain time is recorded by a temperature sensor. Because the volume of the right side is far larger than that of the left side, when heat is transmitted from the left side to the right side, the temperature change fluctuation of the right side is small and is approximate to constant temperature;
3. by comparing the temperature changes after heat application at different starting temperatures.
Temperature change after heat application at different starting temperatures:
in the above table, the numbers in the middle of the table represent the temperature change values of the film surface.
A is common non-woven fabric;
b, organosilicon flexible long-chain polymer processing non-woven fabric;
c, treating the non-woven fabric by infrared radiation powder
D, compounding the organosilicon flexible long-chain polymer/infrared radiation powder to treat the non-woven fabric;
e, processing the non-woven fabric by the mixture of the organosilicon flexible long-chain polymer and the infrared radiation powder.
Explained from the above table are as follows:
1. the heat transfer of the general nonwoven fabric (a) is slow and thus the temperature rise is large.
2. The non-woven fabric (B) is treated by the organosilicon flexible long-chain polymer, and the surface coating of the non-woven fabric enables heat transmission to be slower and temperature rise to be larger;
3. the non-woven fabric (C) treated by the infrared radiation powder has faster heat transmission, so the temperature rise is less
4. The non-woven fabric (D) is compositely treated by the organosilicon flexible long-chain polymer/the infrared radiation powder, the organosilicon flexible long-chain polymer is in a relatively stretching state at low temperature, the infrared radiation powder cannot play a role, the temperature rise is large, and the temperature rise amplitude is gradually reduced along with the temperature rise.
5. The non-woven fabric (E) is treated by the mixture of the organosilicon flexible long-chain polymer and the infrared radiation powder, and the organosilicon flexible long-chain polymer and the infrared radiation powder are simply and physically mixed, so that short-range interaction cannot be exerted, and the curling or stretching of the organosilicon flexible long-chain polymer cannot interact with the infrared radiation powder, so that intelligent temperature regulation cannot be realized.